#include<stdio.h>
void swap(int a, int b) {
  int t=a;
  a=b;
  b=t;
  return;
}
int main() {
  // freopen("in.txt","r",stdin);
  // freopen("out.txt","w",stdout);
  int a=3, b=4;
  swap(a,b);
  printf("%d %d\n", a, b);
  return 0;
}
